48.38. pg_rewrite

The catalog pg_rewrite stores rewrite rules for tables and views.

Table 48-38. pg_rewrite Columns

Name	Type	References	Description
`oid`	`oid`		Row identifier (hidden attribute; must be explicitly selected)
`rulename`	`name`		Rule name
`ev_class`	`oid`	`pg_class.oid`	The table this rule is for
`ev_type`	`char`		Event type that the rule is for: 1 = `SELECT`, 2 = `UPDATE`, 3 = `INSERT`, 4 = `DELETE`
`ev_enabled`	`char`		Controls in which session_replication_role modes the rule fires. `O` = rule fires in "origin" and "local" modes, `D` = rule is disabled, `R` = rule fires in "replica" mode, `A` = rule fires always.
`is_instead`	`bool`		True if the rule is an `INSTEAD` rule
`ev_qual`	`pg_node_tree`		Expression tree (in the form of a `nodeToString()` representation) for the rule's qualifying condition
`ev_action`	`pg_node_tree`		Query tree (in the form of a `nodeToString()` representation) for the rule's action

Note: pg_class.relhasrules must be true if a table has any rules in this catalog.

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